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Promising plasmid DNA vector based on APTES-modified silica nanoparticles

Authors Cheang TY, Tang B, Xu AW, Chang GQ, Hu ZJ, He WL, Xing ZH, Xu JB, Wang M, Wang SM

Received 15 November 2011

Accepted for publication 5 January 2012

Published 23 February 2012 Volume 2012:7 Pages 1061—1067

DOI https://doi.org/10.2147/IJN.S28267

Review by Single-blind

Peer reviewer comments 3

Tuck-yun Cheang1,*, Bing Tang1,*, An-wu Xu2, Guang-qi Chang1, Zuo-jun Hu1, Wei-ling He1, Zhou-hao Xing2, Jian-bo Xu1, Mian Wang1, Shen-ming Wang1
1
Department of Vascular Surgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China; 2Division of Nanomaterials and Chemistry, Hefei National Laboratory for Physical Sciences at Microscale, University of Science and Technology of China, Hefei, China
 
*Both authors contributed equally to this work

Abstract: Nanoparticles have an enormous potential for development in biomedical applications, such as gene or drug delivery. We developed and characterized aminopropyltriethoxysilane-functionalized silicon dioxide nanoparticles (APTES-SiNPs) for gene therapy. Lipofectamine® 2000, a commonly used agent, served as a contrast. We showed that APTES-SiNPs had a gene transfection efficiency almost equal to that of Lipofectamine 2000, but with lower cytotoxicity. Thus, these novel APTES-SiNPs can achieve highly efficient transfection of plasmid DNA, and to some extent reduce cytotoxicity, which might overcome the critical drawbacks in vivo of conventional carriers, such as viral vectors, organic polymers, and liposomes, and seem to be a promising nonviral gene therapy vector.

Keywords: aminopropyltriethoxysilane, silicon dioxide nanoparticles, Lipofectamine® 2000, gene therapy vector, nanomedicine

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